Rape case

My brothers' wife was raped by the manager (relative) during lock down period in kerala while my brother was in Mysore for looking after his other business. His family (wife and 2 daughters) were under the guardiance of the manager as my brother was stuck in mysore for more that 5 months . The victim was threatened not to speak up about the matter or else the manager will kill her husband & daughters. Her mobile number was tapped by the manager. After going back to her husband in Mysore, the victim somehow disclose the matter to her husband. They took lawyer help to lodge a complaint in local police station in kerala and was little late bcoz of quarantine protocol. Anyway, the police lodge the complaint and started the investigation. The police has not arrested the accused till date. Both the parties belong to West Bengal and their work place is in kerala. The accused has come back in west bengal n roaming freely. He appeal to Kerala high court for anticipatory bail but was rejected. my query is what will happen if the accused is not arrested ? how the case will proceed ?